package main

import (
	"fmt"
	"time"
)

func sing() {
	for i := 0; i < 5; i++ {
		fmt.Println("——正在唱歌——")
		time.Sleep(100 * time.Millisecond)
	}
}
func dance() {
	for i := 0; i < 5; i++ {
		fmt.Println("——正在跳舞——")
		time.Sleep(100 * time.Millisecond)
	}
}
func main() {
	go sing()
	go dance()
	for {
	}
}
